Which was a cause of the Iran hostage crisis in 1979

 The Iranian Hostage Crisis, a diplomatic conflict caused by the holding in captivity of United States embassy personnel by Iranian militants from November 4, 1979, to January 20, 1981. The crisis was precipitated when Mohammed Riza Pahlavi, the deposed shah, was allowed into the United States for medical treatment.

Explanation:

"the royal proclamation of 1763"

i would say the executive branch is because the executive branch is in charge of enforcing the laws and judicial branch is in charge of enforcing but the executive branch is most responsible for it all so i would have to say the executive branch.